Runway Fixture Ring

ABSTRACT

A method and device for easily installing and removing an airport light on a runway using a fixture ring having a base ring; an annular lip operatively connected to and extending radially inwardly from the base ring; a lift bar operatively connected to the annular lip and extending from one side to the diametrically opposite side of the annular lip; and a pair of extractors, operatively connecting the lift bar to the annular lip to cause the lift bar to move up and down relative to the annular lip.

TECHNICAL FIELD

This invention relates to fixture rings for installing lights onrunways, such as an airport runway.

BACKGROUND

Runway lights at an airport serve the vital purpose of guiding airplanesonto the runway at night. Eventually, the lights burnout or malfunction,requiring replacement. The runway lights are built to withstand abusefrom the elements. Therefore, the runway lights can be heavy. Inaddition, so as to minimize any protrusion from the ground, the runwaylights are made generally flat and flush with the ground. This makesreplacement of the lights difficult. Therefore, for the foregoingreasons, there is a need for a fixture ring that allows for quick andeasy installation and removal of the runway lights from the runway.

SUMMARY

The present invention is directed to fixture rings to be mounted ontothe holes in the ground, referred to as cans, that receive runwaylights. The fixture ring has a base ring and an annular lip protrudingradially inwardly from the base ring, the annular lip dimensioned toallow the runway light to be seated within the fixture ring withoutfalling through. The fixture ring further comprises a lift bar with anassociated pair of extractors that can move the lift bar up and downrelative to the base ring. In some embodiments, a spacer may be providedto properly distance the lift bar relative to the runway light.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 shows a perspective view of an embodiment of the fixture ringwith a runway light installed.

FIG. 2 shows an exploded view of the fixture ring shown in FIG. 1.

FIG. 3 shows a side elevation view of the fixture ring in FIG. 1.

FIG. 4 shows a cross section of the fixture ring through line 4-4 shownin FIG. 1.

FIG. 5 shows a perspective view of the embodiment shown in FIG. 1 fromthe bottom without the runway light installed and with the lift bar andthe spacers removed for clarity.

DETAILED DESCRIPTION OF THE INVENTION

The detailed description set forth below in connection with the appendeddrawings is intended as a description of presently-preferred embodimentsof the invention and is not intended to represent the only forms inwhich the present invention may be constructed or utilized. Thedescription sets forth the functions and the sequence of steps forconstructing and operating the invention in connection with theillustrated embodiments. It is to be understood, however, that the sameor equivalent functions and sequences may be accomplished by differentembodiments that are also intended to be encompassed within the spiritand scope of the invention.

The fixture ring 100 of the present invention allows for easyinstallation and removal of airport runway lights 10. The fixture ring100 can also be used in any other situation in which lighting isinstalled on the ground. With reference to the figures, the fixture ring100 comprises a base ring 102, an annular lip 120, a lift bar 140, and apair of extractors 160 a, 160 b. The base ring 102 is defined by a top104, a bottom 106 opposite the top 102, an outer perimeter 108, and aninner perimeter 110, the base ring 102 defining a central axis A. Theannular lip 120 may be operatively connected to and extend radiallyinwardly from the base ring 102, and in particular, from the innerperimeter 110 of the base ring 102. The lift bar 140 may be operativelyconnected to the annular lip 120. The pair of extractors 160 a, 160 bmay operatively connect the lift bar 140 to the annular lip 120 in amanner that allows the lift bar 140 to move up and down relative to theannular lip 120.

The fixture ring 100 of the present invention is preferably used withrunway lights 10, such as those manufactured by Crouse-Hinds. As shownin FIGS. 1 and 2 typically, the runway lights 10 have an inner cover 12that houses the lighting device and the electricals for the lightingdevice, and an optical housing 14 mounted on top of the inner cover 12to contain and protect the lighting device underneath. The opticalhousing 14 comprises a lens 16 through which the lighting device canemit light. The inner cover 12 is generally cylindrical in shape definedby a bottom end 18, and a cylindrical sidewall 20 extending upwardlytherefrom terminating at a flanged lip 22 that defines an opening. Thediameter D1 of the flanged lip 22 is greater than the diameter D2 ofsidewall 20. The optical housing 14 is circular in shape and mounts ontop of the flanged lip 22. In general, the diameter D3 of the opticalhousing 14 is substantially similar to the diameter D1 of the flangedlip 22. Therefore, the optical housing 14 can be fastened to the innercover 12 using fasteners to attach the perimeter of the optical housing14 to the flanged lip 22. The runway lights 10 may further comprise aplurality of through-holes 24 a, 24 b through the optical housing 14 andthe flanged lip 22 to allow the runway lights 10 to be fastened to thefixture ring 100. In general, the runway lights 10 have at least twodiametrically opposed through-holes 24 a, 24 b adjacent to the perimeterof the optical housing 14.

The inner perimeter 110 of the base ring 102 defines a base ring innerdiameter D4. The base ring inner diameter D4 is substantially similar tothe optical housing diameter D3 and the flanged lip diameter D1 of theinner cover 12. The annular lip 120 also defines an annular lip innerdiameter D5. The annular lip inner diameter D5 is substantially similarto the sidewall diameter D2 and smaller than the base ring innerdiameter D5, the optical housing diameter D3, and the flanged lipdiameter D1. Therefore, when the runway light 10 is inserted through thefixture ring 100, the annular lip 120 serves as a ledge upon which theflanged lip 22 of the inner cover 12 can be mounted so as not to passall the way through the fixture ring 100.

The inner perimeter 110 of the base ring 102 is defined by an internalwall 112. The height H of the internal wall 112 measured from the top122 of the annular lip 120 to the top 104 of the base ring 102 issubstantially similar to the thickness T of the optical housing 14.Therefore, when the runway light 10 is mounted on the base ring 102 suchthat the flanged lip 22 of the inner cover 12 rests on top of theannular lip 120, the top of the optical housing 14 is flush with the top104 of the base ring 102. As is, this makes removal of the runway light10 from the fixture ring 100 very difficult.

In some embodiments, the top 104 of the base ring 102 comprises a slot114 slanting towards the central axis A and the bottom 106 of the basering 102. The slot 114 allows a tool having a flat end to be insertedalong the slot 114 and against the optical housing 14. The tool can thenbe used to lift the optical housing 14 out from the base ring 102. If,however, the surface of the optical housing 14 does not have any cutoutsor traction, then it will be difficult for the tool to lift the opticalhousing 14 out of the base ring 102. As discussed further below, thisproblem is solved with the lift bar 140.

In some embodiments, additional features of the base ring 102 include acutout 116 that lowers the height H of the base ring wall 112 at thecutout 116. This facilitates exposure of the light from the lightingdevice. The base ring 102 may further comprise a plurality ofthrough-holes 118 a-d intermittently and angularly spaced apart aboutthe outer perimeter 108. Fasteners can be inserted through thethrough-holes 118 a-d to secure the fixture ring to the ground or thecan.

The annular lip 120 is defined by a top surface 122, a bottom surface124 opposite the top surface 122, and an inner perimeter surface 126that defines the annular lip inner diameter D5. Since the annular lip120 is radially inward relative to the base ring 102, the annular lipinner diameter D5 is smaller than the base ring inner diameter D4. Insome embodiments, the top surface 122 of the annular lip 120 comprises alocating peg 128 protruding upwardly towards the top 104 of the basering 102 and parallel to the central axis A. The locating peg 128assures that the runway light 10 is properly installed on the fixturering 100. The flanged lip 22 and bottom of the optical housing 14 maycomprise an opening to receive the locating peg 128. The position of thelocating peg 128 and the opening on the flanged lip 22 and the opticalhousing 14 are such that when the locating peg 128 is seated within theopening, the lens 16 of the optical housing 14 is aligned with thecutout 116 on the fixture ring 100 so that the internal wall 112 of thebase ring 102 does not interfere with the light emitting from the lens16.

In some embodiments, the top surface 122 of the annular lip 120comprises a first through-hole 130 a and a second through-hole 130 b,each through-hole 130 a, 130 b extending from the top surface 122 to thebottom surface 124 of the annular lip 120. The positioning of thethrough-holes 130 a, 130 b of the annular lip 120 are such that when therunway light 10 is mounted on the fixture ring 100, the first and secondthrough-holes 130 a, 130 b of the annular lip 120 are aligned with twoof the through-holes 24 a, 24 b of the runway light 10. Preferably, twoof the through-holes 130 a, 130 b of the annular lip 120 are on thediametrically opposite sides of each other. The runway light 10 and theannular lip 120 may comprise additional through-holes through which therunway light 10 can be fastened to the annular lip 120.

In some embodiments, the fixture ring 100 may further comprise a pair ofspacers 180 a, 180 b operatively connected to the annular lip 120 andprojecting away from the base ring 102. Each spacer 180 a, 180 b may bein the shape of a curved wall having a top side 182 a, 182 b, a bottomside 184 a, 184 b opposite the top side 182 a, 182 b, a front side 186a, 186 b adjacent to the top side 182 a, 182 b and the bottom side 184a, 184 b, and a back side 188 a, 188 b opposite the front side 186 a,186 b and adjacent to the top side 182 a, 182 b and the bottom side 184a, 184 b, and two lateral sides 190 a, 190 b, 192 a, 192 b opposite eachother and adjacent to the top side 182 a, 182 b, the bottom side 184 a,184 b, the front side 186 a, 186 b, and the back side 188 a, 188 b. Eachspacer 180 a, 180 b may comprise a main channel 194 a, 194 b extendingfrom their respective top sides 182 a, 182 b to their respective bottomsides 184 a, 184 b. When the spacers 180 a, 180 b are operativelyconnected to the annular lip 120, each channel 194 a, 194 b is alignedwith one of the diametrically opposed through-holes 130 a, 130 b of theannular lip 120 and one of the diametrically opposed through-holes 24 a,24 b of the runway light 10. Therefore, when the runway light 10 isproperly seated in the fixture ring 100, a first through hole 24 a on afirst side of the runway light 10 may be aligned with a first throughhole 130 a of the annular lip 120, which in turn is in line with a firstchannel 194 a of the first spacer 180 a. A second through hole 24 b onthe diametrically opposite side of the first through hole 24 a of therunway light 10 is aligned with a second through hole 130 b of theannular lip 120, which in turn is in line with a second channel 194 b ofthe second spacer 180 b. A first extractor 160 a can be fed through thefirst through hole 24 a of the runway light 10, the first through hole130 a of the annular lip 120, and the first channel 194 a of the firstspacer 180 a to connect with a first through hole 142 a of the lift bar140. A second extractor 160 b can be fed through the second through-hole24 b of the runway light 10, the second through-hole 130 b of theannular lip 120, and the second channel 194 b of the second spacer 180 bto connect with a second through-hole 142 b of the lift bar 140.Vertical movement of the extractors 160 a, 160 b causes verticalmovement of the lift bar 140. If the runway light 10 abuts against thelift bar 140, then vertical movement of the lift bar 140 will causevertical movement of the runway light 10.

Vertical movement of the extractors 160 a, 160 b can be achieved in avariety of different ways. In some embodiments, the extractors 160 a,160 b may be threaded like a bolt or a screw. In such an embodiment, atleast one of the through holes 24 a, 24 b, 130 a, 130 b of the runwaylight 10 or the annular lip 120, the channels 194 a, 194 b of thespacers 180 a, 180 b, or the through-holes 142 a, 142 b of the lift bar140 may be threaded. For example, the first and second spacers 180 a,180 b may comprise first and second threaded channels 194 a, 194 b,respectively, each channel 194 a, 194 b parallel to the central axis A,and each channel 194 a, 194 b aligned with one through-hole 130 a, 130 bof the annular lip 120. Rotation of the extractors 160 a, 160 b in afirst direction (e.g. clockwise) causes the extractors 160 a, 160 b tomove out of their respective spacer 180 a, 180 b in an upward directioncausing the lift bar 140 to follow in the upward direction. Rotation ofthe extractors 160 a, 160 b in a second direction opposite the firstdirection (e.g. counterclockwise) causes the extractors 160 a, 160 b tomove downwardly into their respective spacers 180 a, 180 b. Movement ofthe lift bar 140 causes upward and downward movement of the runway light10.

In the preferred embodiment, the extractors 160 a, 160 b are a pair ofbolts. The length of each extractor 160 a, 160 b, the height of therunway light 10, the height of the annular lip 120, and the height ofthe spacers 180 a, 180 b are all configured so that when the runwaylight 10 is properly seated in the fixture ring 100, and the extractors160 a, 160 b are fully inserted into their respective through-holes, thelift bar 140 and the inner cover 12 of the runway light 10 are spacedapart by a gap. This gap can be closed by rotating the extractor 160 a,160 b in the proper direction, which causes the lift bar 140 to rise up.Once the lift bar 140 abuts against the inner cover 12, further rotationof the extractors 160 a, 160 b from the fixture ring 100 causes therunway light 10 to rise upwardly. At some point, the bottom of theoptical housing 14 or lip 22 of the inner cover 12 will be exposed bythe slot 114, at which point the user can slide a tool through the slot114 and under the optical housing 14 to create leverage to continue tolift the runway light 10 out of the fixture ring 100.

The lift bar 140 has a top side 144, a bottom side 146 opposite the topside 144, a first end 148, and a second end 150 opposite the first end148. The distance from the first end 148 to the second end 150 defines alength L of the lift bar 140. In the preferred embodiment, the length Lof the lift bar 140 spans at least the annular lip inner diameter D5,and preferably to the annular lip outer diameter. Therefore, the liftbar 140 may extend substantially from the first through-hole 130 a ofthe annular lip 120 to the second through-hole 130 b of the annular lip120 located on the diametrically opposite side of the first through-hole130 a of the annular lip 120. The first through-hole 142 a of the liftbar 140 adjacent to the first end 148 is aligned with the firstthrough-hole 130 a of the annular lip 120, and the second through-hole142 b of the lift bar 140 adjacent to the second end 150 is aligned withthe second through-hole 130 b of the annular lip 120.

In use, a runway light 10 can be installed on a runway by securing afixture ring 100 onto a can on the runway and placing a runway light 10onto the fixture ring 100. The runway light 10 can be fastened to thefixture ring 100 using typical fasteners. If the top of the runway light10 is not substantially flush with the top 104 of the base ring 102,then the pair of extractors 160 a, 160 b can be adjusted to lower thelift bar 140 until the top of the runway light is flush with the top 104of the base ring 102. When ready to remove the runway light 10, the pairof extractors 160 a, 160 b can be adjusted to raise the lift bar 140until the top of the runway light 10 (e.g. the optical housing 12) issufficiently exposed to gain leverage for removing the runway light 10,for example, by inserting a tool underneath the flanged lip 22 of runwaylight 10. The tool may be inserted via the slot 114. Preferably, theextractors 160 a, 160 b are threaded on their outer surface such thatrotation of the extractors 160 a, 160 b in a first direction causes thelift bar 140 to rise and rotation of the extractors 160 b in a seconddirection opposite the first direction causes the lift bar 140 to lower.Therefore, adjustment of the extractors 160 a, 160 b requires rotationof the extractors 160 a, 160 b about longitudinal axes B, C.

The foregoing description of the preferred embodiment of the inventionhas been presented for the purposes of illustration and description. Itis not intended to be exhaustive or to limit the invention to theprecise form disclosed. Many modifications and variations are possiblein light of the above teaching. It is intended that the scope of theinvention not be limited by this detailed description, but by the claimsand the equivalents to the claims appended hereto.

What is claimed is:
 1. A fixture ring for seating runway lights, thefixture ring comprising: a. a base ring defined by a top, a bottomopposite the top, an outer perimeter, and an inner perimeter, the basering defining a central axis and a base ring inner diameter, wherein thetop comprises a slot slanting towards the inner perimeter and thebottom, a cutout that lowers a height of the base ring at the cutout,and a plurality of through-holes intermittently and angularly spacedapart about the outer perimeter, the through-holes extending from thetop of the base ring to the bottom of the base ring and parallel to thecentral axis; b. an annular lip extending radially inwardly from theinner perimeter of the base ring, the annular lip defining an annularlip inner diameter, wherein the annular lip inner diameter is smallerthan the base ring inner diameter, the annular lip defining a topsurface, a bottom surface opposite the top surface, and an innerperimeter surface, wherein the top surface of the annular lip comprisesa first through-hole and a second through-hole, each through-holeextending from the top surface to the bottom surface of the annular lip,wherein the first and the second through-holes of the annular lip arelocated at diametrically opposite sides, wherein the top surface of theannular lip further comprises a locating peg protruding upwardly towardsthe top of the base ring and parallel to the central axis; c. a pair ofspacers projecting away from the top and bottom of the base ring, afirst spacer comprising a first threaded channel extending therethrough,and a second spacer comprising a second threaded channel extendingtherethrough, each threaded channel parallel to the central axis, andeach threaded channel aligned with one of the first or secondthrough-holes of the annular lip; d. a lift bar operatively connected tothe pair of spacers, the lift bar extending substantially from the firstthrough-hole of the annular lip to the second through-hole of theannular lip, wherein the lift bar comprises a top side, a bottom sideopposite the top side, a first end, and a second end opposite the firstend, a first through-hole of the lift bar adjacent to the first end andextending from the top side of the lift bar to the bottom side of thelift bar, and a second through-hole of the lift bar adjacent to thesecond end and extending from the top side of the lift bar to the bottomside of the lift bar; and e. a pair of threaded bolts, a first boltinsertable through the first through-hole of the annular lip, the firstchannel of the first spacer, and the first through-hole of the lift bar,and a second bolt insertable through the second through-hole of theannular lip, the second channel of the first spacer, and the secondthrough-hole of the lift bar, wherein rotation of the first and secondbolts in a first direction causes the lift bar to rise up towards thebase ring, and rotation of the first and second bolts in a seconddirection causes the lift bar to descend away from the base ring.
 2. Afixture ring for seating runway lights, the fixture ring comprising: a.a base ring defined by a top, a bottom opposite the top, an outerperimeter, and an inner perimeter, the base ring defining a central axisand a base ring inner diameter; b. an annular lip extending radiallyinwardly relative to the base ring, wherein the annular lip extends fromthe inner perimeter of the base ring, the annular lip defining anannular lip inner diameter, wherein the annular lip inner diameter issmaller than the base ring inner diameter, the annular lip defining atop surface, a bottom surface opposite the top surface, and an innerperimeter surface; c. a lift bar operatively connected to the annularlip, the lift bar having a top side, a bottom side opposite the topside, a first end, and a second end opposite the first end, wherein adistance from the first end to the second end defines a length, whereinthe length of the lift bar spans at least the annual lip diameter; andd. a pair of extractors, operatively connecting the lift bar to theannular lip to cause the lift bar to move up and down relative to theannular lip.
 3. The fixture ring of claim 2, wherein the top of the basering comprises a slot slanting towards the inner perimeter and thebottom.
 4. The fixture ring of claim 3, wherein the base ring comprisesa cutout that lowers a height of the base ring at the cutout.
 5. Thatfixture ring of claim 4, wherein the base ring comprises a plurality ofthrough-holes intermittently and angularly spaced apart about the outerperimeter, the through-holes extending from the top to the bottom andparallel to the central axis.
 6. The fixture ring of claim 2, whereinthe top surface of the annular lip comprises a locating peg protrudingupwardly towards the top of the base ring and parallel to the centralaxis.
 7. The fixture ring of claim 6, wherein the top surface of theannular lip comprises a first through-hole and a second through-hole,each through-hole extending from the top surface to the bottom surfaceof the annular lip.
 8. The fixture ring of claim 7, wherein the firstand the second through-holes of the annular lip are located atdiametrically opposite sides.
 9. The fixture ring of claim 2, furthercomprising a pair of spacers operatively connected to the annular lipand projecting away from the base ring.
 10. The fixture ring of claim 9,wherein a first spacer comprises a first channel extending therethrough,and a second spacer comprising a second channel extending therethrough,each channel parallel to the central axis, and each channel aligned withone through-hole of the annular lip.
 11. The fixture ring of claim 2,wherein the lift bar extends substantially from a first through-hole ofthe annular lip to a second through-hole of the annular lip located on adiametrically opposite side of the first through-hole of the annularlip, wherein a first through-hole of the lift bar adjacent to the firstend is aligned with the first through-hole of the annular lip, and asecond through-hole of the lift bar adjacent to the second end isaligned with the second through-hole of the annular lip.
 12. The fixturering of claim 2, wherein the extractors are a pair of bolts, a firstbolt insertable through a first through-hole of the annular lip and afirst through-hole of the lift bar, and a second bolt insertable througha second through-hole of the annular lip, and a second through-hole ofthe lift bar, wherein rotation of the first and second bolts in a firstdirection causes the lift, bar to rise up towards the base ring, androtation of the first and second bolts in a second direction causes thelift bar to descend away from the base ring.
 13. The fixture ring ofclaim 12, further comprising a first spacer and a second spaceroperatively connected to the annular lip on diametrically oppositesides, wherein the first spacer comprises a first channel and the secondspacer comprises a second channel, wherein the first channel of thefirst spacer is aligned with the first through-hole of the annular lipand the first through-hole of the lift bar, and the second channel ofthe second spacer is aligned with the second through-hole of the annularlip and the second through-hole of the lift bar.
 14. The fixture ring ofclaim 13, wherein the channel is threaded.
 15. A method of installingand replacing lighting on runway, comprising: a. securing a fixture ringonto a can, wherein the fixture ring comprises a base ring defined by atop, a bottom opposite the top, an outer perimeter, and an innerperimeter, the base ring defining a central axis and a base ring innerdiameter; an annular lip operatively connected to and extending radiallyinwardly from the inner perimeter of die base ring, the annular lipdefining an annular lip inner diameter, wherein the annular lip innerdiameter is smaller than the base ring inner diameter, the annular lipdefining a top surface, a bottom surface opposite the top surface, andan inner perimeter surface; a lift bar operatively connected to theannular lip, the lift bar having a top side, a bottom side opposite thetop side, a first end, and a second end opposite the first end, whereina distance from the first and to the second end defines a length,wherein the length of the lift bar spans at least the annular lip innerdiameter; and a pair of extractors, operatively connecting the lift barto the annular lip to cause the lift bar to move up and down relative tothe annular lip; b. placing a runway light onto the fixture ring, therunway light having a top and a bottom; c. if the top of the runwaylight is not flush with the top of the base ring, then using the pair ofextractors to adjust the lift bar until the top of the runway light isflush with the top of the base ring; and d. when ready to remove therunway lights, using the pair of extractors to raise the lift bar untilthe top of the runway lights is sufficiently exposed to gain leveragefor removing the runway light.
 16. The method of claim 15, wherein thetop of the base ring comprises a slot, for inserting a tool when the topof the runway light is sufficiently exposed to gain leverage forremoving the runway light.
 17. The method of claim 15, wherein the pairof extractors each comprises a threaded outer surface such that rotationof the extractors iii a first direction causes the lift bar to raise androtation of the extractors in a second direction opposite the firstdirection causes the lift bar to lower.
 18. The method of claim 17,wherein the fixture ring further comprises a pair of spacers separatingthe lift bar from the annular lip.
 19. The method of claim 18, whereinthe pair of spacers each comprises a threaded channel to receive one ofthe extractors.